Question about 2003 GMC Yukon Denali

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What does it mean when the tc light comes on in a 2003 gmc denali

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6ya6ya
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Posted on Jan 02, 2017

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  • 43 Answers

SOURCE: 2003 gmc yukon denali xl starts but gas not

if your engine starts up and dies right away the you probably have a fuel pump problem and the service ride control mean that your air ride compressor has gone bad just turn your key to the on position and wait about 30 seconds you will here buzzing from the left rear wheel area if the compressor is working

Posted on Jul 19, 2009

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SOURCE: traction active keeps coming on

TRY CHECKING THEW OIL IN THE DIFFERENTAL FRON AND REAR, IF IT'S LOW FILL AND SEE IF YOU SEE ANY FLUID COMMING OUT.

Posted on Aug 21, 2009

bschilz
  • 2049 Answers

SOURCE: 2003 gmc denali service stababilty light

In order to know what the problem is, you need to have the error code(s) read. Try any mechanic... or many auto parts stores will check the codes for free.

From there the codes can be interpreted and a course of action determined.

Posted on Oct 07, 2009

saailer
  • 1868 Answers

SOURCE: 2003 GMC Denali. Reduced Power Light and power.

Hello! Can you send a more detailed explanation of the fault...Guru....saailer

Posted on Nov 10, 2010

dttech
  • 4803 Answers

SOURCE: Can bad hub bearings make the abs and tc light to

Absolutely YES! The bearing and hub assembly contains the wheel speed sensor which is used by the Antilock Brake System (ABS) and the Traction Control (TC) system to see when a wheel is trying to lock up and cause skidding. The ABS will release the hydraulic pressure to the brake on that wheel and the traction control will reduce engine speed to prevent the wheel from locking up or causing you to spin out.
Many GM vehicles also commonly have problems with the wiring harnesses to the wheel speed sensors that can cause this same problem. The computer does not know WHY it cannot read the speed sensor signal. It only knows that it is not getting the signal and this is why the light is turned on. Before paying the BIG BUCKS for a wheel bearing and hub assembly, it would be wise to make absolutely certain that the problem is not being caused by a fault in the wiring harness. I have seen many mechanics automatically replace the wheel bearing only to find out that the problem still exists because they did not take the time to DIAGNOSE the problem. The fault code description says "Wheel Speed Sensor CIRCUIT fault." They see "speed sensor and automatically replace the sensor without actually checking the circuit. Not a problem unless you are the customer having to PAY for this type of guess-work!!!

There are wiring harness repair kits available for MOST GM vehicles just for this purpose.

I have included pictures of the bearing and hub assembly and the wiring harness kit to help you understand what we are talking about here.

Note the electrical connector sticking out of the hub assembly. This is the wires to the speed sensor. In the other picture, the connector at the end of the wiring harness is what plugs into the connector in the hub assembly. The other end of it gets spliced into the main vehicle harness in the engine compartment, after cutting the original harness out.

WHEEL BEARING AND HUB ASSEMBLY



dttech_40.jpg WIRING HARNESS REPAIR KIT

dttech_41.jpg

Posted on Aug 20, 2011

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1 Answer

What are the probable causes of DTC P1689?


That fault code is given as P1689 Delivered Torque Circuit Fault
The link below lists the error codes (but does not provide any further details)
https://www.engine-light-help.com/gm-trouble-codes.html

It obviously relates to the automatic transmission.

Here's a further link that may be of help to you:
http://repairpal.com/my-tc-light-is-on-and-want-go-off-what-can-the-problem-be-717

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Apr 09, 2010 | 2003 GMC Yukon Denali

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2003 gmc denali service stababilty light


In order to know what the problem is, you need to have the error code(s) read. Try any mechanic... or many auto parts stores will check the codes for free.

From there the codes can be interpreted and a course of action determined.

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1 Answer

Traction active keeps coming on


TRY CHECKING THEW OIL IN THE DIFFERENTAL FRON AND REAR, IF IT'S LOW FILL AND SEE IF YOU SEE ANY FLUID COMMING OUT.

Aug 18, 2009 | 2003 GMC Yukon Denali

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